Ventilated driving mechanism



L /BRY'SON. VENTILAT-EQDRIVING MECHANISM.

APPLICATION FILED JAN-3., 1919.

Patented Nov. 7; M223,

2 SHEETSSHE'ET 1.

T. A, BRYSON.

.VENTILATED DRIVING MECHANISM.

APPLICATION FILED JAN.8, I919.

II IM WQ 2 SHEETSSHEET Z.

Patented Nov. 7

I I U III Zi a till ll... GE TEOZ, NEW 'YORK, ASSTGNOR T0 TOLHUBST MACHINE WURKS,

ll. CORPORATION OE NEW YOEK. 1

VENTILA'LED DRIVING MECHANISIVT.

Application filed January 8, 1919. Serial N o. 270,152.

To all whom it' may concern."

Be it known that I, TANDY A. BRYsoN, a citizen of the United States, residing at Cfroy, in the county of Rensselaer and State a of New York, have invented new and useful improvements in Ventilated Driving Mechanism, of which the following is a speci-- iication.

The invention relates to centrifugal mania chines, and more especially to the. driving and controlling means, including I cooling and ventilating devices therefor.

Objects and advantages of the invention will be set forth in part hereinafter, and in it part will be-obvious herefrom, the same being attained and realized through the instrumentalities and combinations pointed out in the appended claims.

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described. I

The accompanying drawings herein referred to and constituting a part hereof, illustrate one embodiment of the invention, and together with the description serve to explain the principles thereof.

Of the drawings:

Fig. 1 is a vertical central section of a centrifugal machine embodying the invention; Pig. 2 is a detail, in central vertical section, through the combined belt pulley and brake; 1535 Fig. 3 is a fragmentary bottom plan, looking at the pulley of Fig. 2 from below; and Fig. 4 is a fragmentary detail in elevation of the suspension and brake control.

Referring to the accompanying drawings,

illustrating by way of example the present preferred embodiment of the invention, the -same is shown applied to a suspended centrifugal, the invention in certain of its-features being especially applicable to machines of this kind, although in other features it is also applicable toother kinds of. centrifu- A casing 1 is shown, supported in sta-. tionary position in any suitable manner, and

suspended for rotation therewithin is a has ket 2, within which basket the material to be dried or separated is placedin the usual manner. As shown, the basket 2 has a bottom discharge through the'passages 3, these passages being provided with a closing valve es 4, which is slidable along the centrifugal shaft to open and close the discharge passages -3. The basket 2 is fixed to a shaft 5 by means of a sleeve 6, the shaft supporting and whirling the basket during the separatit ing or drying operation.

The shaft .5 is supported in the present embodiment by a resilient oscillatory bearing, the entire bearing and driving means being mounted upongirder plates 7 and 8. The

bearing is designed and adapted to carry unbalanced loads in the basket and to absorb yrato'ry movement and side pressure cause by the operation of the machine with an unbalanced load. The bearing may be of it any suitable or approved form, so as concerns its details of construction, as emloyed with the present invention. I

The shaft t'i, as shown, has a resilient hearing of any suitable or approved design, vario-us forms of such bearings being well known, enclosed within a housing 20, the shaft 5 having oscillatory or gyratory movementupon its bearing within the housing. The housing 20 is preferably integral with so or attached to a casing 22, later to be de scribed in detail, the casing being mounted upon and fixed to the girders 7 and The driving and controlling means comprise, in the preferred embodiment, a combined belt-driven pulley and brake, and. therewith the cooling and ventilating means and means for conveying away all belt and brake dust which might otherwise fall into the basket andimpair or damage the mateto rial being operated upon. In the. embodied form of such means, a hub 26 is fixed to the shaft 5, just below the bearing, by suitable means such as a clamping screw 27. From the upper part of the hub 26 the body 28 95 extends outwardly, and the cylindrical portion of the pulley extends or projects in both directions from the body 28. The lower part of such cylindrical extension is formed into a brake drum 29, and the, upper part of I the cylindrical extensionis formed intoa belt pulley or belt engaging surface 30.

The belt pulley 30 extends upwardly about i and surrounds the shaft hearing so that the belt drive is in horizontal alinenient with the bearing, and is thus at the center of'oscillation of. the shaft 5.

The brake drum is likewise very close to the center of oscillation, thereby obviating almost entirely shake and rocking in the creating an air current for cooling the brake drum and thereby carrying away and dissipating excessive heat which vwould damage the belt, and further in accordance with 'certain features of the invention the air current is employed to blow away all belt and brake dust, which might otherwise find its way around the spindle and down to the basket or its, contents. As embodied, said cooling and blowing means comprises a plurality of relatively thin, radially disposed blades withingthe brake drum, including vanes 36 extending within and along the cylindrical interior of the brake drum 29 as will be seen froraFigs; 2 and 3., Other vanes 37 are preferably provided between the vanes 36, extending along the cylindrical inner sur= face of the brake drum 29. The casing 22 preferably practically completely encloses the bearings and the pulley, but has openings 38 for the passage of the belt there into and there out of. vThe casing 22 is also provided with an air inlet orifice 39 at its lower part about the'shaft 5 or hub 26. The top of the casing 22, as previously indicated, is integral or continuous with the housing 20 which surrounds thebearing for the basket shaft 5.

When the machine is running, the air currents are created bythe vanes 36 and 37, and the air is drawn in through the orifice 39 passing within-the brake drum and carries away the heat radiated therefrom and from the vanes 36 and 37. The air current passes from within the brake drum upwardly about the brake band and the belt drive and circularly within the casing, as indicated by the any such details, but changes may be made its chief therein without departing from the principles of the invention, and without i tges.

What it claim l, centrifugal machine including in combination a basket, a shaft supporting and rotating the basket, an oscillatory hearing from which the shaft issuspended, pulley fixed to the shaft below the bearing and extending upwardly about the bearing, the exterior of the pulley having a belt drive directly aboutthe oscillatory bearing and having a brake drum below the belt drive and provided on its interior with heat radiating and air blowing vanes, and a casing having a be t opening and surroundingthe pulley and brake drum and shaped to admit air to the blowing and radiating vanes and to conduct the air current about the drum and belt drive andout at the belt opening.

2. A centrifugal machine including in combination a basket, a shaft supporting and rotating the basket, an oscillatory hearing from which the shaft is suspended, a pulley fixed to the shaft belowvthe bearingand extending upwardly about the bearing, the exterior of the pulley having a belt drive directly about the oscillatory bearing and having a brake drum below the belt drive and provided on its interior with heat radiating and air blowing vanes, and a casing sursacrificing rounding the pulley and brake drum and having an air admitting opening at its bottom about the shaft and having a belt opening through which the'air current from thevanes on the pulley passes out.

3. A centrifugal machine including combination a basket, a shaft supporting and rotating the basket, an oscillatory bearing from which the'shaft is suspended, a hollow pulley fixed to the shaft and surrounding the bearing andhaving a belt engaging-surface and a braking surface and means for causing a current of airto pass through the interior of the braking part of the pulley .and about the exterior of the pulley.

and rotating the basket, a pulley on the shaft and having a belt engaging surface and a'braking surface, a casing'about the pulley, and means for creating a current of air within the pulley and about the pulley within the casing.

5. A centrifugal machine including in combination a basket, a shaft supporting and rotating the basket, an oscillatory hearing from which the shafi is suspended, a

pulley on the shaft, a casing inclosing the pulley and means for creating an air current travehng from the bottom of the casing and. away from the basket.

i 6. A centrifugal machine including in combination abasket, a shaft supporting and rotating the basket, an oscillatory bearing from which the shaft is suspended, a pulley and a brake drum on the shaft, a casing inclosing the pulley and means for creating an air current traveling from the bottom of the casing and away from the basket.

7. A centrifugal machine including in combination a basket, 'a shaft supporting and rotating the basket, a brake drum on the shaft, air blowing vanes within the brake drum and a casing about the brake drum.

8-. A centrifugal machine-including in combination a basket, a shaft supporting and rotating the basket, a brake drum on the shaft, air blowing vanes-within the brake drum and a casing about the brake drum, the casing having an air inlet orifice about the shaft and an air outlet onthe opposite side of-the brake drum.

9. A centrifugal machine including in combination a basket, a shaft supporting and rotating the basket, abrake drum on the shaft, heat radiating vanes within the brake drum and ineanscooperating' there With to create an air current past said vanes.

10. A centrifugal machine including in combination a basket,a'shaft supporting and rotat ng the basket, a brake drum on the shaft, heat radiating vanes within thebrake drum and means cooperating therewith including an apertured casin the brake drum to create an air current past said vanes. v v

11. A centrifugal machine .including in combination a. basket, a shaft supporting and rotating the basket, and a brake drum on the shaft, comprising a hub fixed to the shaft, a body extending outwardly from the hub and a cylindrical part at'the outsideof said body, and vanes arranged within, the

cylindrical part.

12. A centrifugal machine including in combination a basket, a shaft supporting and rotating the basket,and a brake drum on the shaft comprising "a hub fixed to the shaft,

a body extending outwardly from the hub, a

cylindrical part at the outside of said body, I and vanes arranged along the cylindrical art. P 13.A centrifugal machine including in combination a basket, a shaft supporting and rotating'the basket, and a brake drum on the shaft comprising a hub fixed to the shaft, a

body extending'outwa'rdly from the hub, a

cylindrical part at the outside of saidbody and vanes arranged substantially radially along said body between the hub and"'cylindrlcal part. l

14;. A centrifugal machine including in combination a basket, a shaft supporting and rotating the basket, and a brake drum on the shaft comprising a hub fixed to the shaft, a

body extending outwardly from the hub, a

surrounding.

. brake drum.

cylindrical part at the outside of said body,-

and vanes arranged substantially radially along said body' and along the interior of said cylindrical part. i

15. A centrifugal machine including in combination a basket, a shaft supporting and shaft comprising a hub fixed to the shaft-,'a

body extending outwardly from the hub, a cylindrical part at the outside of said body,

vanes arranged substantially radiallyalong I isaid .body and'along the interior of said cylindrical part, other vanes arranged along the interior of said cylindrical part between the first-described vanes, and a cylindrical portion extending from said body in the opposite direction from said brake drum,said last mentioned cylindrical portion constituting-abelt drive. f

' 17. Al comb'ned belt pulley and brake .drum including air propelling means there- Within and a surrounding housing apertured to cooperate with the air propelling means to create a current of cooling air within the device.

18. A combined belt pulley and brake drum including airvanes within the device and a surrounding housingapertured to cooperate with the air propelling means to create a current of cooling air Within the device.

19. A combined belt pulley and brake drum including air vanes within the brake drum and a surrounding housing apertured to cooperate withthe air propelling-means to create a current of cooling air within the 20. A driving device including in combination' a shaft, a pulley on the shaft having a belt engaging surface and a braking surface, air propelling means within the pulley and a housing about the pulley apertured to cooperate 'With the air propelling means to create a current of cooling air within the pulley. l

'21. A driving device including in combination a shaft, apulley on the shaft having a belt engaging surface and a braking."

surface, air propelling means within the pulley and, a housing about the pulley apertured to cooperate with the air propelling means to create a current of cooling air within the braking part of the pulley. 22. A centrifugal ma-ohlne including in combination a suspended basket, a shaft eX- In testimony whereof, I have signed my tending upwardly from the basket, a belt name to this specification, in the presence of and brake pulley on the shaft abme the bastwo subscribing Witnesses.

ket, and means for directing a current of air TANDY A. BRYSON.

about the pulley and away from the basket Witnesses:

HELEN A. KEAR s,

to cool the pulley and to carry the (lust away MATILDA K. BUSKIN.

from the basket. 1 

